Home / Brake Lathe Accessories / Quick Change Adaptors / Heavy Duty Truck Plate 12″ Diameter with 1 7/8″ Hole Heavy Duty Truck Plate 12″ Diameter with 1 7/8″ Hole $340.15 Part Number: 85721 Out of stock UPC: 682488857217 Category: Quick Change Adaptors Related products Out of StockQuick Chuck Medium Duty Truck Adapter Upgrade Kit. 4 Pieces. $588.02 Part Number: 85713View Product Small Backing Plate – 4 3/4″ (882S) $97.57 Part Number: 85705Add to Cart Medium Duty Truck Kit w/ Extra Large Jaws, Quick-Chuck, Backing Plate, & Step-Down Adaptor $843.39 Part Number: 85712Add to Cart Complete Quick Chuck w/Backing Plate (880) $922.42 Part Number: 85708Add to Cart